How To Fix /IWBEP/CM_CP105 - If-Match is requested but no ETag property was found

/IWBEP/CM_CP105 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 105

• Message text: If-Match is requested but no ETag property was found

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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/IWBEP/CM_CP105 - Details

• The SAP error message /IWBEP/CM_CP105 If-Match is requested but no ETag property was found typically occurs in the context of OData services when a client attempts to perform an operation (like an update or delete) that requires an ETag for concurrency control, but the service does not provide an ETag for the resource being accessed.
  
  Cause:
  
  Missing ETag: The primary cause of this error is that the OData service does not return an ETag for the resource. ETags are used to manage concurrent updates to resources, and if the client sends an If-Match header expecting an ETag but the service does not provide one, this error will occur.
  Service Configuration: The OData service might not be configured to generate ETags for the entities being accessed.
  Entity Set Configuration: The specific entity set might not have ETag support enabled.
  
  
  Solution:
  
  Check Service Implementation: Ensure that the OData service is correctly implemented to return ETags. This typically involves